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Патент USA US2118807

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HY 3L 1938.
Filed Feb. 6, 1956
2 Sheets-Sheet l
May 31, 1938.
Filed Feb. 6, 1936
2 Sheets-Sheet 2
Patented May 31, 1938
Dick Carter, Austin Godwin Cuthbert-Smith,
Harry Jackson, Leslie Paige Rendell, and Harry
Augustus Thomas, Blackley, Manchester, Eng
land, assignors to Imperial Chemical Indus
tries Limited, a corporation of Great Britain
Application February 6, 1936, Serial No. 62,678
In Belgium May 7, 1935
2 Claims.
This invention relates to dyeing apparatus; and
it comprises a dyeing apparatus having a tank
adapted to hold a body of dye liquor, means for
passing a web of fabric through the liquor in
5 the tank, and means in the tank for directing
streams of gas through the dye liquor toward the
are provided for continuously moving the fabric 5.
through the dye liquor and for maintaining
web across its width, to insure rapid and thorough
penetration and movement of dye liquor into and
ized in that a device is provided for continuously
in the web; all as more fully hereinafter set
bombarding the fabric with dye liquor, the said
temperature control of the dye liquor character
forth and as claimed.
device Comprising one or more series of pipes `
It has long been standard dyehouse practice
to conduct dyeing in vessels heated by perfo
fixed in staggered arrangement relatively to the
line of feed of the fabric between them, the said
rated steam coils through which steam is intro
pipes being at a distance of not more than six
duced directly into the dye liquor. In the liquor
inches from the fabric passing between them and
having perforations therein adapted for admis
' immediately surrounding and adjacent to the
perforations a certain throbbing and directed
streaming of dye liquor may be produced, but
both throbbing and streaming are not in the
active sphere of dyeing, i. e, within the fabric.
bath and, with many classes of dyestuffs, an im
proved shade. All classes of dyestuffs may be
According to the invention, therefore, means
In dyeing cloth, difficulty is often experienced
in securing uniform and rapid penetration of the
cloth by the dye. Attempts have been made to
solve this problem by mechanically agitating the
whole body of liquor in the tank in one way or
another. However, in most cases agitation of
the liquor body produces but little action on the
liquor in the cloth and moreover many such expe
dients produce a circulation or swirling in the
free body of dye liquor. Such effects we have
found objectionable.
The effectiveness of the improved apparatus of
the present invention is not dependent on circu
lation of the dye liquor but is dependent on the
bombardment of the fabric with bubbling dye
55 liquor. It is an object of the present invention
to provide an apparatus for use in the dyeing
of piece goods made from animal, vegetable or
artificial fibres, particularly closely woven or
felted material at atmospheric pressure in a dye
»io liquor in which a throbbing and streaming is
caused to take place actually within the pores
or interstices of the material to be dyed. Thus,
when dyeing is proceeding, i. e. at the surface of
the fibre within the fabric there appears to be
set up a pulsating hydraulic pressure of the en
tire dye liquor, while at the same time swirling
is preferably avoided. The diiîerence in hydrau
lic pressure on the two sides of the fabric is
produced by a controlled and directed bubbling
50 of air, o1` steam admixed with air, o1' a suitable
inert gas.
By the use of the apparatus of the invention
there is obtained a more thorough and rapid
penetration of the fabric and simultaneously a
5 more rapid and complete exhaustion of the dye
sion of air or steam or a mixture of both so as
to set up a turbulence of dye liquor and a differ
ence of dye liquor pressure on either side of the
The invention is described with reference to
the accompanying drawings in which Figure 1 is
a longitudinal cross section of a dyeing tank along
the line I-I of Figure 2. Figure 2 is an end
cross section along the line 2-2 of Figure l.
Figure 3 is a longitudinal cross section of a
modified dyeing tank along the line 3-3 of Fig
ure 4, and Figure 4 is an end cross section on the
line 4-4 of Figure 3.
Figures 1 and 2 show a tank adaptable for dye
ing piece goods of limited length, and Figures 3 30
and 4 illustrate a tank for use in dyeing strips
of unlimited length, such as is customary in the
Referring in general to Figures 1 to 4 in which
like reference characters refer to like parts, the
dyeing machine consists of a tank I0 adapted to
contain a bath of dye liquor I I and having mount
ed on the top- thereof a rotating roller or winch
I2 (Figs. 1 and 2) driven by a pulley I3. In the
device of Figs. 3 and 4 the roller is shown as of
s‘latted construction and is denoted by 32. The
fabric I4 in the form of a continuous chain is
circulated through the dye liquor by means of the
roller Winch and passes between two spaced pipes
I5 and I6, provided with a series of perforations
I‘I facing the fabric as shown. A suitable ar
rangement of guide rollers- such as is shown by 20
in Figures 1 and 2, and by 2l, 22 and 23 in Figures
3 and 4 is provided to ensure a smooth and even
movement of the fabric through the dye liquor.
The pipes I5 and I5 are so fixed one on each side
of the fabric that they are substantially parallel
to its face and at right angles to the selvedge.
They are further set at such an agle with re
spect to the perforations that the axes of the 55
perforations of one pipe are not in the same plane
as the axes of the perforations of the other pipe.
The perforations face the fabric, and air or steam
or a mixture of both is forced through so that
the fabric as it passes between the pipes is born
barded with bubbling liquor. . Since the pipes are
ñxed as described the hydraulic pressure on one
side does not neutralize the pressure on the other
spaced from the fabric at a distance of not more
than about six inches, and having perforations
therein on the sides facing the fabric and adapt
ed for injection of air or steam under pressure
into the dye liquor so as to set up a turbulence
of the dye liquor and a difference of dye liquor
pressure on either side of the fabricand means
for supplying the pipes with air or steam under
side, and consequently an extremely effective` pressure.
2. Apparatus for dyeing a web comprising a 10
10 penetration of the dye liquor through the fabric
is ensured. The perforations may conveniently tank adapted to hold a body of dye liquor, means
be one inch apart, and the pipes about two inches for passing a web of fabric through the liquor
distant from the fabric. The dye liquor is kept in the tank, conduit means on the tank on each
hot by closed steam coils 2li»,> which may if desired side of the Web extending along the Width thereof,
15 be fixed in a portion of the dyebath separated and spaced apart in the direction of passage of 15
the Web, the conduit means being orificed at in
from the main body of the trough by a perfo
rated partition indicated at 25 in Figure 4. In the tervals along the length thereof adjacent the web,
showing of Fig. 3, the partition is omitted for the and means for supplying a gas under pressure to
the' conduit means, so as to cause jets of dye
sake of clarity.
and air to impinge on the fabric with bub 20
We claim:
1. In apparatus for use in dyeing piece goods bles rising along the surface, producing iluctuat
and having a tank adapted to hold a body of dye ing, localized areas of differential pressure across
liquor and means for continuously feeding fabric the fabric, thereby insuring rapid and thorough
penetration of dye liquor.
through the dye liquor and means for maintain
25 ing temperature control of the dye liquor, means
for continuously bombarding the fabric with dye
liquor comprising at least one pair of pipes
mounted in the tank in staggered arrangement
relative to the line of feed of the fabric and on
30 opposite sides of the fabric, the `pipes being
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